Productive potential of upland rice under conventional and organic farming systems

  • Janice Regina Gmach IFSC-SC
  • Cileide Maria Medeiros Coelho UDESC-CAV Departamento de agronomia
  • Círio Parizotto
  • Isaac Heberle
  • Heitor Amadeu Prezzi CAV UDESC
  • André Tesser Mafioleti
  • Clovis Arruda Souza
  • David José Miquelluti
Keywords: characterization, genetic variability, path analysis

Abstract

This paper aimed to evaluate the genetic diversity of upland rice varieties, determine the components that contributes most to productivity and evaluate the yield of varieties grown in conventional and organic farming systems. The experiment was carried out during the 2011/2012, 2012/2013 and 2013/2014 crop years, with 11 local upland rice varieties (Agulha, Rosa 15, Mato Grosso, Gomes, Preto, Argentino, Kinsel, Camilo, Piriquito, Casca Roxa and Caipira) and two commercial varieties (Primavera and Cambará). Genetic diversity was observed among the varieties for all evaluated variables and the thousand grain weight was the character that contributed most to the divergence between varieties. The number of panicles m-2 was the yield component that presented the highest association with grain yield of varieties in organic farming systems. The average yield of the varieties was 2.303, 1.711 and 3.534 kg ha-1 for the seasons 1, 2 and 3 respectively, and the highest yields were obtained with earlier sowing and temperature during grains maturation about 20°C. The ‘Piriquito’, ‘Argentino’, ‘Gomes’ and ‘Kinsel’ varieties presented yield above 2.000 kg ha-1 for all seasons, in both systems, indicating better adaptation to the region of the study and can be indicated as the most promising for the crop under organic cultivation.

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Author Biographies

Janice Regina Gmach, IFSC-SC
Dr Producao vegetal
Cileide Maria Medeiros Coelho, UDESC-CAV Departamento de agronomia

Professor adjunto 2

Area de Produção, ciência e tecnologia de sementes

Círio Parizotto
Msc
Clovis Arruda Souza
Dr Plantas de lavoura
David José Miquelluti
Dr Estatística
Published
16-07-2018
How to Cite
Gmach, J. R., Coelho, C. M. M., Parizotto, C., Heberle, I., Prezzi, H. A., Mafioleti, A. T., Souza, C. A., & Miquelluti, D. J. (2018). Productive potential of upland rice under conventional and organic farming systems. Comunicata Scientiae, 9(1), 70-80. https://doi.org/10.14295/cs.v9i1.1619
Section
Original Article